Dynamite Friction 631-31009L Disc Brake Rotor - Front Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver is engineered for precise braking performance on BMW 318i models. Designed with durability and heat dissipation in mind, this disc brake rotor offers reliable stopping power and enhanced safety.

• Part Number: 631-31009L
• Compatible with BMW 318i
• Disc Type: Solid, drilled and slotted surface
• Nominal Thickness: 12.6 mm with a discard thickness of 11.1 mm
• Rust-resistant zinc silver hat finish
• Directional brake surface for optimized performance
• Four bolt holes with 15 mm diameter and 100 mm bolt circle diameter
• Outside diameter of 260 mm and overall height of 35.1 mm

Detailed Product Features and Specifications

This Dynamite Friction rotor features a solid disc design with a drilled and slotted surface type, which helps improve heat dissipation and reduce brake fade during demanding driving conditions. The rotor’s nominal thickness is 12.6 mm, with a discard thickness of 11.1 mm, ensuring a clear maintenance threshold for safety. The zinc silver coating on the hat provides rust resistance, extending the rotor’s service life. The directional brake surface is engineered to optimize braking efficiency and maintain consistent contact with brake pads.

The rotor includes four bolt holes and stud/lug holes, each with a diameter of 15 mm, arranged on a 100 mm bolt circle diameter, making it a precise fit for the BMW 318i. The overall height and height measurements are both 35.1 mm, with a center hole diameter of 66 mm, ensuring proper alignment and installation.

About the DFC Brake Rotor - Drilled and Slotted - Silver Line

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction focuses on delivering rotors that balance performance and durability. This product line features rotors with drilled and slotted surfaces designed to improve heat dissipation and reduce brake pad glazing. The silver zinc coating on the hat enhances corrosion resistance, making these rotors suitable for vehicles like the BMW 318i that require reliable braking components under various driving conditions.

Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 318i
• Improves braking performance by reducing heat buildup
• Helps prevent brake fade during extended or aggressive braking
• Reduces rust and corrosion on rotor hats for longer service life
• Maintains consistent brake pad contact with directional surface design

Installation Notes and Tips

Ensure the rotor is compatible with your BMW 318i by verifying the part number 631-31009L and bolt pattern specifications. Clean the rotor surface before installation to remove any protective coatings or residues. Use proper torque settings on the four 15 mm bolt holes to secure the rotor firmly. Check rotor thickness regularly and replace when thickness reaches the discard limit of 11.1 mm to maintain safe braking performance.

Quality Assurance and Warranty

Dynamite Friction manufactures the 631-31009L rotor to meet industry standards for durability and performance. The rust-resistant zinc silver coating and precise machining contribute to consistent braking reliability. Please refer to Dynamite Friction’s warranty policy for specific coverage details related to this brake rotor.